feat: Go backend, enhanced search, new widgets, Docker deploy

Major changes:
- Add Go backend (backend/) with microservices architecture
- Enhanced master-agents-svc: reranker, content-classifier, stealth-crawler,
  proxy-manager, media-search, fastClassifier, language detection
- New web-svc widgets: KnowledgeCard, ProductCard, ProfileCard, VideoCard,
  UnifiedCard, CardGallery, InlineImageGallery, SourcesPanel, RelatedQuestions
- Improved discover-svc with discover-db integration
- Docker deployment improvements (Caddyfile, vendor.sh, BUILD.md)
- Library-svc: project_id schema migration
- Remove deprecated finance-svc and travel-svc
- Localization improvements across services

Made-with: Cursor

services/search-svc/Dockerfile

@@ -1,7 +1,9 @@
+# syntax=docker/dockerfile:1
 FROM node:22-alpine AS builder
 WORKDIR /app
 COPY package*.json ./
-RUN npm install
+COPY --from=npm-cache / /tmp/npm-cache
+RUN npm install --cache /tmp/npm-cache --prefer-offline --no-audit
 COPY tsconfig.json ./
 COPY src ./src
 RUN npm run build
@@ -9,7 +11,8 @@ RUN npm run build
 FROM node:22-alpine
 WORKDIR /app
 COPY package*.json ./
-RUN npm install --omit=dev
+COPY --from=npm-cache / /tmp/npm-cache
+RUN npm install --omit=dev --cache /tmp/npm-cache --prefer-offline --no-audit
 COPY --from=builder /app/dist ./dist
 EXPOSE 3001
 CMD ["node", "dist/index.js"]

services/search-svc/src/index.ts

@@ -62,7 +62,7 @@ async function searchSearxng(
       if (options.pageno != null) params.set('pageno', String(options.pageno));
       const url = `${base.startsWith('http') ? base : 'http://' + base}/search?${params.toString()}`;
       const controller = new AbortController();
-      const t = setTimeout(() => controller.abort(), 15000);
+      const t = setTimeout(() => controller.abort(), 25000);
       const res = await fetch(url, {
         signal: controller.signal,
         headers: {
@@ -132,7 +132,7 @@ app.get<{
   const engines = req.query.engines ?? '';
   const language = req.query.language ?? '';
   const pageno = parseInt(req.query.pageno ?? '1', 10);
-  const hash = queryHash(q, categories + engines + language);
+  const hash = queryHash(q, categories + engines + language + String(pageno));
   const cacheKey = `search:${hash}`;
   try {
     const cached = await redis.get(cacheKey);